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Finding the Fourth Proportional to 143,525.61, 215,288.55 and 68,628.15

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Solution

The fourth proportional to 143,525.61, 215,288.55 and 68,628.15 is: 102,942.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,525.61 : 215,288.55 = 68,628.15 : x
  2. Step 2: Convert to fraction form
    143,525.61/215,288.55 = 68,628.15/x
  3. Step 3: Cross multiply
    143,525.61x = 215,288.55 × 68,628.15
  4. Step 4: Simplify right side
    143,525.61x = 14,774,854,902.68
  5. Step 5: Solve for x
    x = 14,774,854,902.68/143,525.61
  6. Step 6: Final answer
    x = 102,942.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.